<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Application
 * @subpackage Resource
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Session.php 23775 2011-03-01 17:25:24Z ralph $
 */

/**
 * @see Zend_Application_Resource_ResourceAbstract
 */
require_once 'Zend/Application/Resource/ResourceAbstract.php';

/**
 * Resource for setting session options
 *
 * @uses       Zend_Application_Resource_ResourceAbstract
 * @category   Zend
 * @package    Zend_Application
 * @subpackage Resource
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Application_Resource_Session extends Zend_Application_Resource_ResourceAbstract {
	/**
	 * Save handler to use
	 *
	 * @var Zend_Session_SaveHandler_Interface
	 */
	protected $_saveHandler = null;
	
	/**
	 * Set session save handler
	 *
	 * @param  array|string|Zend_Session_SaveHandler_Interface $saveHandler
	 * @return Zend_Application_Resource_Session
	 * @throws Zend_Application_Resource_Exception When $saveHandler is no valid save handler
	 */
	public function setSaveHandler($saveHandler) {
		$this->_saveHandler = $saveHandler;
		return $this;
	}
	
	/**
	 * Get session save handler
	 *
	 * @return Zend_Session_SaveHandler_Interface
	 */
	public function getSaveHandler() {
		if (! $this->_saveHandler instanceof Zend_Session_SaveHandler_Interface) {
			if (is_array ( $this->_saveHandler )) {
				if (! array_key_exists ( 'class', $this->_saveHandler )) {
					throw new Zend_Application_Resource_Exception ( 'Session save handler class not provided in options' );
				}
				$options = array ();
				if (array_key_exists ( 'options', $this->_saveHandler )) {
					$options = $this->_saveHandler ['options'];
				}
				$this->_saveHandler = $this->_saveHandler ['class'];
				$this->_saveHandler = new $this->_saveHandler ( $options );
			} elseif (is_string ( $this->_saveHandler )) {
				$this->_saveHandler = new $this->_saveHandler ();
			}
			
			if (! $this->_saveHandler instanceof Zend_Session_SaveHandler_Interface) {
				throw new Zend_Application_Resource_Exception ( 'Invalid session save handler' );
			}
		}
		return $this->_saveHandler;
	}
	
	/**
	 * @return bool
	 */
	protected function _hasSaveHandler() {
		return ($this->_saveHandler !== null);
	}
	
	/**
	 * Defined by Zend_Application_Resource_Resource
	 *
	 * @return void
	 */
	public function init() {
		$options = array_change_key_case ( $this->getOptions (), CASE_LOWER );
		if (isset ( $options ['savehandler'] )) {
			unset ( $options ['savehandler'] );
		}
		
		if (count ( $options ) > 0) {
			Zend_Session::setOptions ( $options );
		}
		
		if ($this->_hasSaveHandler ()) {
			Zend_Session::setSaveHandler ( $this->getSaveHandler () );
		}
	}
}
